Objective To assess the intra-and interobserver reproducibility of ultrasound measurements of fetal biometric parameters. BPD, AC, HC and FL were as follows: 0.996 (0.995, 0.997), α 0.998; 0.994 (0.992, 0.996), α 0.997; 0.996 (0.994, 0.997), α 0.998; and 0.994 (0.992, 0.996), α 0.997, respectively. Similarly, the inter-CC with the 95% CI and RC for the same parameters were as follows: 0.995 (0.993, 0.997), α 0.998; 0.980 (0.971, 0.990), α 0.990; 0.994 (0.992, 0.996), α 0.997; and 0.990 (0.985,0.993) Methods Results Reliable consensus was observed for both the intra-CC and inter-CC and RC for all four biometric parameters. The intra-CC with the 95% CI and RC for the

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